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===Pathogenesis===
 
===Pathogenesis===
Intussusception results from abnormal peristalsis. Vigorous contractions force the more proximal intestine to invaginate into the adjacent distal portion, taking its mesenteric attachment with it. Obstruction of the gastrointestinal tract causes distention which may lead to rupture and peritonitis. Compression of the mesenteric vessels cause vascular compromise to the instestine, resulting in venous congestion, oedema and if the aterial supply is damaged, full thickness necrosis. An inflammatory exudate is released from the serosal surface and fibrinous adhesions may form, making the structure irreducible.
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Intussusception results from abnormal peristalsis. Vigorous contractions force the more proximal intestine to invaginate into the adjacent distal portion, taking its mesenteric attachment with it. Obstruction of the gastrointestinal tract causes distention which may lead to rupture and peritonitis. Compression of the mesenteric vessels cause vascular compromise to the intestine, resulting in venous congestion, oedema and if the aterial supply is damaged, full thickness necrosis. An inflammatory exudate is released from the serosal surface and fibrinous adhesions may form, making the structure irreducible.
    
Intussusception normally occurs due to gastrointestinal disease, although it is often hard to identify the cause. It is associated with any condition that increases peristalsis such as
 
Intussusception normally occurs due to gastrointestinal disease, although it is often hard to identify the cause. It is associated with any condition that increases peristalsis such as
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